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(No Mbdel.) 7 Sheets-Sheet 1..

, E. T. GREENFIELD. MECHANISM FOR LINING METAL TUBES WITH PLIABLEMATERIAL.

No. 595,472. PatentedDec. 14,1897.

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E. T. GREENFIELD." MECHANISM FOR LINING METAL TUBES WITHPLIA'B'LEMATERIAL."

No. 595,472. Patented Dec. 14,1897.

WM? ahvew'to'o I am Pf :2 @313 Q (Nb Modem 7 sheets-sneet 3.

E. T. GREENPIELD. MECHANISM FOR LINING METAL TUBES WITH PLIABLEMATERIAL. N0. 595,472.

Patented Dec. 14, 1897.

; WIN" 1 R (No Model.) 7 Sheets-Sheet 4.

E. T. GREENPIELD. MECHANISM FOR LINING METAL TUBES WITH PLIABLEMATERIAL.

No. 595,472. Patented Dec. 14,1897.

l Q gm kg (No Model.) 7 Sheets-Sheet 5.

, E. T. GREENFIELD/ MECHANISM FOR LINING METALTUBES WITH PLIABLEMATERIAL.

No. 595,472 Patented Dec 14 1897.

Q ra Cro q vi/flueooa f awde flcoz (No Model.)-

77 Sheets-SnQet -6.

E. T. GREENFIELD. MEGHANISM FOR LINING METAL TUBES WITH PLIABLEMATERIAL.- 1 Io.595,472.

Patented De0.,14, 1897 7 Sheets-Sheet 7.

Patented Dec. 14, 1897.

(No Model.)

E. T. GREENFIELD. MECHANISM FOR LINING METAL TUBES WITH PLIABLEMATERIAL. No 595,472.

UNITED STATES FFlCE..

PATENT MECHANISM FOR LINING METAL TUBES WITH PLIABLE MATERIAL.

SPECIFICATION forming part of Letters Patent No. 595,472, dated December14, 1897.

' Application filed April 29, 1897. Serial No. 634,362. (No model.)

upon an invention disclosed in a prior patent. granted to me by theUnited States Patent 1 Office on the 27th day of October, 1896, andnumbered 570,165, and will be fully understood by referring to thefollowing specification and accompanying drawings, in which- Figures 1to 5, inclusive, illustrate in side elevational View, and Figs. 1 to 5,inclusive, in plan view, the entire apparatus, consisting of twocomplete machines arranged side by side and upon asingle set ofstandards or supports. Fig. 6is an end elevational view as seen lookingat Figs. 5 and 5 from right to left, and Fig. 7 is an enlarged sectionalview of the clutch -controlling apparatus which regulates the governingmechanism for governing the speed at which a tube shall be lined. Fig.8, Sheet ,1, is a detail sectional View of one end of thepneumatic-pressure tube and a spring-pressed piston connected thereto.Fig. 9 is a longitudinal sectional view of the inflating-mandrel andmeans for protecting the same as itis moved backward and forward throughthe tube to be lined. Fig. 9 is a transverse sectional view of Fig. 9,taken on the line w, 00, and as seen looking from left to right in thedirection of the arrows. Fig. 10 is an enlarged side elevational View ofthe controlling-valve, showing also the connections to the air-supplyand airpressure pipes. Fig. 11 is a sectional and perspective view ofthe interior rotary portion of said valve, the section being taken onthe line 00 m Fig 12. Fig. 12 is a longitudinal sectional view of thevalve, taken on the line as 00, Fig. 10, and as seen looking at thatfigure from left to right in the direction of the arrows. Fig. 13 is asectional view taken on the line a a Fig. 12; and Fig. 14 is a similarsectional view taken on the line 00 00, Fig. 12.

My invention has for its objects, first, the centralization of theair-controlling valves of the apparatus at a given point where they areall automatically operated by the movement of a tube-carrying carriage;second, the application of a governing mechanism in connection with thepneumatically-actuated ter it is drawn, so that when it is forced intothe tube to be lined there will be no danger of buckling or thepresentation of irregular lines or creases to the interior wall of said3 tube; fourth, to provide means for cooling the paper or fibrous tubingafter it has been subjected to the ironing process, so that it will notcause the paste to dry before it enters the tube to be lined; fifth, toprovide means for causing the mandrel to be moved forward a shortdistance after a tube has been lined and severed, so as to insure nowaste of material and supply a full or complete lining for eachsuccessive tube to be lined; sixth, to provide means for protecting'theexpansible mandrel from abrasure or injury.

Referring now to the drawings in detail and first to Figs. 1 to 6,inclusive, S S S S repre sent four triangular-shaped legs or standardssecured to the floor and supporting on their upper ends a T-shapedmetallic frame A, which acts as a base for the entire apparatus.

The mechanism, it will be noticed, is illustrated in duplicate and iscontrolled in its operations from a single source of air-supply, (notshown,) but connected by an air-pipe T, Fig. 4, and cock 1) with twocontrolling-pipes p 10, having cocks '0 '0 each of said pipes beingconnected to an independent main controlling-valve V, so that indescribing the apparatus it will be understood that all duplicateletters or figures of reference refer to duplicate parts of the twoindependent sets of apparatus, which are thus arranged in practice forconvenient manipulation from a single source of air-supply.

P is a metallic tube, about eleven feet in length, secured by standardsS S to the base A and provided with a hollow piston-rod P piston head H,(see Fig. 8,) and stuffingboxes S Band S B at its opposite ends, saidpiston-rod being substantially like that disclosed in my priorpatent andhaving its outer or exposed portion beyond the stufiing-box S 13provided with perforations 7o 7.; and surrounded with a close-fittingsleeve R, of soft rubber, secured at its opposite ends to the perforatedmandrel by nuts N N, so arranged that the junctions between the ends ofthe sleeve R and the hollow mandrel are airtight.

t t t is a series of thin steel strips surroundin g the sleeve R andattached at their opposite ends to collars N N, there being sufficientplay between the ends of these collars and the nuts N N to allow for theexpansion of the sleeve R when subjected to pressure, the function ofthese metallic strips being to protect the rubber sleeve againstabrasure or to prevent any injury thereto while it is being insertedinto or withdrawn from the tube to be lined.

P R (see Fig. 8) is a rod provided with a perforated buffer-head B H anda spiralspring Sp, located in one end of the tube P", the function ofthese parts being to advance the piston-rod P a definite distance afterthe airpressure has been removed from behind the piston-head 11, so asto cause the inflatingmandrel to advance slightly, as will be moreparticularly described in connection with the description of the mode ofoperation.

R R and R are reels journaled beneath the base A, the reels R and Rbeing adapted to hold strips of paper D D and the reel R a strip ofoil-cloth D 0 r 7' 1' and r *1, Fig. 2, being guide-rolls for the twolatter strips, and P a paste-box adapted to cover both sides of thepaper strip D with paste, the upper surface only of the strip D beingcoated with paste as it passes beneath a supplementary box Z.

K K are suitable tube-forming dies, in this instance not substantiallydifferent from the like parts disclosed in my prior patent and designedto give to the two strips of paper and strip of oil-cloth the necessaryconforniation as they are advanced in the course of operation.

in my prior patent above referred to.

the arrangement being such as to convey a supply of cold water around aclose-fitting sleeve which surrounds the completed drawn tube, so as tocool it as quickly as possible, and p is a junction-pipe joining one ofthe cooling-dies M with the other, the outlet beingawaste-pipe.(Notshowu) Theseseveral parts K, K, M, and M are supported upon asupplemental base T, which in turn is sustained upon the main base A bystandards S S S as clearly shown.

19 is an air-supply pipe running from the valve V, Fig. 4, to theextreme end of the tube P and entering it at the point q (see Fig. 8)behind the piston-head II. p is a similar air-supply pipe running fromthe same valve V to the other end of the tube P and adapted to entersaid tube against the reverse side of the piston-head H. (See Fig. 2.

G is a guideway secured upon the standards S, (see Figs. 3 and 3%) andadapted to sustain a number of sliding eyes or rings 6 c, said eyes orrings being of substantially the same interior diameter as the compositetube, which is formed from the strips D D D as they emerge from the dieK. These eyes are connected together by a chain c and adapted to assumevarious positions upon the completed tube as it is drawn forward, theyall being grouped together at the extreme left before said tube is thusdrawn.

Referring now to Figs. 4, 4, 5, 5, and G,K represents a carriagesustained by rolls R R R and guiding-eyes c e 6 upon a runway A and theguideway G (see Fig. 7,) said parts in turn being supported by lateralarms A A and n a above the frame A. (See Fig. 6.) To the upper side ofthis carriage is secured supporting or carrying brackets on m and aback-stop O, with a front ledge or support 0 forsustaining the tube B tobe lined, said tube being shown in dotted lines. 11 II II are handlesattached to the carriage K for moving it forward to its startingposition. G4 G are sprocket-wheels journaled in arms or supports carriedby the base A beneath the carriage K and supporting a sprocketchain 8,attached at any convenient point to some part of said carriage, thefunction of which is to act as a governor for a definite portion of themovement of the carriage under the pressure of the pneumatic part of theapparatus and positively for another definite portion of said movementafter the pneumatic pressure is removed, its positive action being todraw the tube forward. G6 is 'a second sprocketwheel running looselyupon a shaft s and adapted to bear frictionally against M is aheating-die, and 19 a gas-pipe connected with a supply of gas, r being acock adapted to admit the necessarygas to burners Z; Z) beneath theheating-d ie M, said parts acting substantially as in the mannerdisclosed the sprocket-wheel G (see Fig. 7,) V being a pneumatic valveprovided with a pistonhead P adapted to bring the sprocket-wheel G6 intofrictional relation with G5 at the proper time, n n being ball-bearingsand 0 oil-holes for properly oiling the parts, the M is a cooling-dieconsisting of a water-; jacket operat-ively connected with a pipe 19valve V being connected by a pipe 19 with the controlling-valve V. g, g,9 and g are stops adjustably supported in slots in depending armscarried by the carriage K the function of said stops being to operatethe valve V through the agency of opcratin g-arms I I. (See Fig. 4.)

Referring now to Figs. 10 to 14, inclusive, for a detailed descriptionof the main controlling-valve, it will be seen that this valve is of adouble cylindrical form, the outer portion being provided with threeoutlets designed for exhausting the air at the desired time, while theinner portion V is provided with an inlet-port I V and three inlet orsupply ports S V, S V and S V E V, E V E V being oblong exhaust-portsadapted to connect the pipes p, 19 and p with the ex terior air at theproper time, so as to exhaust. U is a check-rod provided with a spring Sand a roller J, adapted to fall into the successive notches n as thevalve is moved into its successive positions.

In the apparatus illustrated in the drawings the piston-head H is shownas being near the extreme left-hand end of its surrounding pneumatictube or cylinder P so that the free end of the piston which carries theexpansible sleeve R is located slightly to the right of the lastforming-die K, (see Figs. 8, 2, and 2 and the strip of pliable orfibrous material D is sh own as just entering the formin g-die K, whilethe additional strips of fibrous or pliable material D and oil-cloth Dare shown as entering the second forming-die K.

In describing the mode of operation, therefore, it will be understoodthat it is necessary,

first, to pass the strip of fibrous or pliable material D by handthrough the die K, the heating-die M, cooling-die M and final formingdieK and the additional strips through said forming-die, and, finally, todraw all of said strips forward in their completed tubular form and passthem through the eyes or rings 6 e until one length of completedcomposite tubular lining is formed, with its free end resting at a pointslightly in front of the carriage only, the painted or coated portion ofsaid oil-' cloth being upon the lower side, so that it (the paintedportion) is caused to adhere to the inner wall of the tube when linedtherewith, and the three strips are firmly cemented or pasted together.The tube B to be lined is laid upon the carriage K so that its rear endrests in the socket O and its front end upon the ledge 0, itsintermediate portions resting upon supports an 'm. The attendant nowtakes hold of one of the handles H and moves the carriage to its extremeleft limit, thereby causin g the already-formed section of tubularlining to enter said tube and force the eyes or rings 6 c to the leftabout said formed section of tube until they are grouped together at apoint over the supporting-standard S, Fig. 3. The cocks 12"!) havingbeen previously turned to such positions as to admit air from the 1source of air-supply through the pipes T and the operation of themachine, as will be described later on. When the carriage reaches itsextreme left-hand position, the stop g at the right-hand end thereofcomes into contact with the second controlling-arm I of the rotary partof the valve V and rotates it an additional step, thereby bringing thesupplyport S V into alinement with the opening to the pipe 19.Consequently compressed air enters said pipe and passes into thepneumatic-pressure cylinder of tube P at the point q, passing thencethrough the hollow piston P in the same manner as described in my priorpatent, to the hollow expansible mandrel now located inside of thecomposite tubular lining and tube to be lined. This pressure, asdescribed in said patent, causes the lining first to adhere to the innerwall of the tube and then to carry the tube and its supporting-carriagein a reverse direction. At the same time that air entered the pipe 19through the rotary part V of the valve V a second inlet-port S V wasbrought into alinement with the third pipe 19 (see Figs. 4 and 14,)thereby admitting air through said pipe to the interior of theclutch-controlling valve V Fig. 7, and causing the movable part Pthereof to force the shaft 8 and its supported continuously-drivensprocket-wheel G firmly against the sprocket-wheel G so that themovement of the constantly-driven sprocketwheel G is now imparted to thetemporarily stationary sprocket-wheel G and in a direction such that thelower half of the sprocketchain 8, which is secured to the carriage, isnow moving under the action of the pneumatic pressure, but at a statedspeed, so that any tendency on the part of the pneumatic pressure tosuddenly force the lined tube and function as the like part performed inmy prior patent and the cooling-die eliminating the heat, so as toprevent the drying of the paste, and as the completed composite tube isthus drawn forward the guiding or sustaining eyes or rings e ee arecaused to maintain said tube in a perfect tubular form as they areseparated the one from the other and properly spaced by the chain c,which joins them. As the carriage returns in the manner alreadyindicated the stop 9 comes first into contact with the arm I, reversingthe rotary movement of the part V in such manner as to place theexhaust-valve E V in the position shown in Fig. 13, there.- byexhausting the air from the pneumaticpressure tube 19 and the expansiblemandrel R. The carriage and its supported tube are now moved under thepositive action of the sprocket-ch ain s and the positively-propelledsprocket-wheel G which in turn is actuated by a constantly-driven sourceof power at any desired speed through a sprocket-chain S This positivemovement is continued for a brief distance until the stop g comes intocontact with the arm I, thereby rotating the rotatable part V of thevalve V an additional step to the right until the exhaust-port If V ofthe rotary part V of the valve Vis brought into position to exhaust theair behind the movable part of the clutch-valve V Figs. 7 and 14. \Vhenthis occurs, the carriage stops and the apparatus is again ready to beadvanced for the lining of another tube. It will be noticed that whenthe rotary part V of the valve V assumes the position shown in Fig. 4,owing to the action of the stop g, the supply-port S V was placed insuch position as to admit air to the pipep? (See Fig. 10.) Consequentlythis inflow of compressed air behind the piston-head II caused thepiston P to return to its extreme limit, (shown in dotted lines in Fig.8,) and the machine stands in this position, with the piston-head heldfirmly against the pressure-rod P R, acting thus against the continuedstrain of the spiral spring Sp. Consequently the free end of theexpansible mandrel R is now at a point slightly to the left of thesupport 0' and thus remains until the tubular lining is severed, afterwhich an additional pipe to be lined is laid in place and the attendantnow taking hold of the handle H moves the carriage to the left, asbefore, whence the stop 9, striking the arm I, rotates the rotary part Vof.

the valve V, in the same manner as before described, until theexhaust-port E V is opposite the inlet of the pipe 19 (see Fig. 10,)thereby exhausting the airin the pipe 19 and the pneumatic-pressure tubeP behind the piston-head H and allowing the springpressed rod P R, underthe action of the spring Sp, to force said piston-rod P and hence themandrel R, a few inches to the right, thus carrying it to the extremeend of the exposed portion of the lining and enabling the attendant toutilize all of the lining without waste. The carriage is now moved tothe left, as before, by hand, and the operation continued indefinitely.

AlthoughI have hereinbefore described my improved apparatus asapplicable to the lining of tubes with paper, oil-cloth, or otherfibrous or pliable material, I do not limit it to such uses, as it isobvious that it may be utilized in the lining of tubes with strips ofrubber, or, in fact, any material which is sufficiently pliable to admitof use in the manner described.

It is also obvious that the apparatus may be used for the purpose ofdrawing tubes from thin sheets of paper, or, in fact, any material whichmay be used for the forming of tubes by drawing processes, and my claimshereinafter made are to be construed as of such scope as to cover,generically, all such uses.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is

1. Mechanism for lining tubes with pliable or fibrous materialconsisting of means for forming a tube from strips thereof, means forinserting said tube within the tube to be lined and then inflating it, acarriage for carrying said tube and a con trolling-valve for regulatingthe operation of said parts, in combination with valve-controlling meanscarried by the carriage, substantially as described.

2. Mechanism for lining tubes with pliable or fibrous material such aspaper, consisting of means for forming the tube-lining of the pliablematerial, and additional means con sisting of an expansible mandrel ortube for causing the previously-formed tube to adhere to the inner wallof the tube to be lined, in combination with regulating or governingmechanism for regulating the speed at which the mechanism shall operate,substantially as described.

3. Tube-lining mechanism consisting of means for inserting apreviously-formed tube of pliable or fibrous material such as paperwithin a tube to belined, in combination with additional means forholding or maintaining the lining in its tubular form while it is beingformed and inserted into the tube to be lined, substantially asdescribed.

4. In a tube-lining machine a series of eyes or rings'adapted tosurround the lining as it is being drawn, said rings being joinedtogether but having independent movement, substantially as described.

5. Mechanism for forming a tube of pliable or fibrous material, such aspaper, consisting of a die adapted to give to said material a tubularshape or conformation as it is drawn forward, means for heating thiscompleted tube so as to iron it into shape, means for coating additionalstrips of fibrous material with paste and additional means for giving tothe additional strips a tubular form, in combination with means forcooling the firstnamed tube so as to delay the action of the adhesiveagent, substantially as described.

6. In a tube-lining machine means for constructing the lining frompliable or fibrous material and inserting it into a tube to be lined, incombination with means for causing the inserting mechanism to partiallyadvance the lining within the tube before the latter is forced forwardto its extreme limit around the lining whereby a waste of liningmaterial is avoided and each tube supplied with the required lengththereof, substantially as described.

7. In a tube-lining machine an expansible sleeve provided with means forpreventing injury thereto, substantially as described.

8. In a tube-lining machine an expansible sleeve secured at its oppositeends to a hollow perforated piston, in combination with protecting meanssurrounding said sleeve and expansible therewith and adapted to protectthe same from injury, substantially as described.

9. Atube-linin g machine consisting of pneumatically-controlledmechanism adapted to form and expand a lining of pliable or fibrousmaterial Within a tube to be lined, in combination with a carriageadapted to carry said tube over the lining and means operativelyconnected Wit-h the carriage adapted to govern the speed at which thelining-tube shall be drawn, substantially as described.

10. A tube-lining machine consisting of pneumatically controlledmechanism for forming and lining a tube with pliable or fibrousmaterial, in combination with pneument by said valve, substantially asdescribed.

In testimony whereof I have hereunto subscribed my name this 2lst day ofApril, 1897.

EDWIN T. GREENFIELD. Witnesses:

W- B. VAN DE WATER, O. J. KINTNER.

